Mentzelia cf. ampla Bittner of Trechmann (1918)

Macfarlan, Donald Alexander Bankier, 2023, Latest Triassic and Early Jurassic Spiriferinida (Brachiopoda) of Zealandia (New Zealand and New Caledonia), Zootaxa 5277 (1), pp. 1-58 : 23

Status of Mentzelia cf. ampla Bittner of Trechmann (1918)

1918 Mentzelia cf. ampla Bittner, 1890; Trechmann p. 228, pl. XXIII 9.

1945 Mentzelia cf. ampla Bittner, 1890; Allan, p. 16.

1953 Mentzelia cf. ampla Bittner; Marwick, p. 34.

2009 Mentzelia cf. ampla Bittner, 1890; MacFarlan et al. p. 266.

Examination of a fibreglass mould of Trechmann’s specimen (B50492) ( Fig. 13 4a , 4b ), shows it to be well within the morphological range of C. kawhiana , and Mentzelia cf. ampla should therefore be removed from the Zealandian fauna.

Figures

FIGURE 4. Main areas of Triassic–Jurassic strata in this study: A Baie de St Vincent, New Caledonia, with areas of Late Triassic and Jurassic rocks indicated. Base and geology from Gouvernment de Nouvelle-Calédonie data. Inset: New Caledonia showing area of Figure 4A and location of Moindou-Téremba area. B Southern Kawhia Syncline, southwest Auckland, showing Kawhia Syncline, with areas of Late Triassic and Jurassic rocks indicated. Main spiriferide localities shown. C Southland, showing extent of Southland Syncline. Rectangle shows Otapiri Valley (Fig. 5B). Base for B and C: LINZ (Land Information New Zealand) topographic data with geology from GNS Science (Institute of Geological Sciences) 1: 250,000 geological map (Q-Map) (Edbrooke et al. 2014, Heron 2014).

FIGURE 13. Callospiriferina kawhiana (x 1.2). 1 Holotype NHM B50493 (R15/f) shelly specimen (a) dorsal (b) ventral (from Trechmann 1918). 2 BR 1015 (F46/f9488) internal mould (original of Marwick (1953) pl. 1 10 and 11) (a) dorsal (b) ventral. Photos: M. Terezow. 3 AU B742 (R15/f) shelly specimen (a) dorsal (b) ventral. 4 NHM B50492 (R15/f) fibreglass mould, (a) ventral (b) lateral (Mentzelia cf. ampla of Trechmann (1918). 5 AU B741 (R15/f8636) partly shelly specimen, (a) dorsal (b) ventral. 6 AU B745 (R16/f8919) internal mould (a) ventral (b) lateral. 7 AU B785 (R16/f0317) (a) dorsal (b) ventral (c) lateral (d) anterior. 8 BR 3405 (NC/f0023) shelly specimen, ventral. 9 AU B811 (NC/f0060A) shelly specimen (a) dorsal (b) ventral (c) lateral (d) anterior. 10 BR 3317 (N28/f9454) internal mould (a) dorsal (b) ventral (c) posterior (d) anterior. 11 BR 3316 (N28/f9454) internal mould, ventral. 12 OU 47283 (E45/f9608) internal mould (a) dorsal (b) ventral (c) lateral (d) posterior (e) anterior.